The Wet & Dry ATTIX 7 is perfect for users who need high capacity vacuuming & features that focus on efficiency. Our most silent vacuum, ever, with superior suction performance, stainless steel tilt or lift-out container, automatic filter cleaning, anti-static capability & more. The container found on the ATTIX 7 means that you can work a very long time without emptying the container, & when emptying is necessary, the Tilt or Lift-Off container system is extremely convenient & time-saving. The 21 model features an automatic on/off system which is designed for people who use the machine with electric hand tools, as starting or stopping the tool also starts & stops the vacuum. Click here to download the product fact sheet.